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No. 6l4,872. Patented Nov. 29. I898. F. KRUPP.

SCISSORS.

(Application filed Mar. 10, 1898.)

(.N 0 Model.)

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FRANZ KRUPP, OF SOLINGEN, GERMANY.

SCISSORS.

SPECIFICATION forming part of Letters Patent N 0. 614,872, dated November 29, 1898.

Application filed March 10, 1898- To aZZ whom it may concern:

Be it known that I, FRANZ KRUPP, residing at Solingen, Prussia, Germany, have invented certain new and useful Improvements in Scissors, of which the following is a specification.

My invention relates to scissors and shears, and has for its object to improve the construction thereof and to at the same time produce a cheaper article.

By my invention I produce scissors or shears in which the cutting qualities are greatly enhanced by reason of the springy character of the added blades, as will be hereinafter described.

My invention will be understood by referring to the accompanyingdrawings,in which- Figures 1, 2, 3, t, and 5 represent the parts from which I construct my improved scissors or shears. Fig. 6 is a side view of scissors or shears made up of said parts. Fig. 7 is a side view of the scissors or shears shown in Fig. 6, exhibiting the same open. Fig. 8 is a section through the rear part of the blades of the scissors when the same are open, the section being taken on line 8 8 of Fig. 7. Fig. 9 is a section through the rear part of the blades of the scissors, the same being closed, the section being taken on line 9 9 of Fig. 6;

and Fig. 10 is a section on line 10 10 of Fig. 7. 3

It will be understood that my improvements are applicable to scissors and shears indiscriminately. So, therefore, wherever in this specification I use the word scissors or shears I mean thereby to include both scissors and shears.

In the accompanying drawings, Figs. 2 and 4 show complemental shear-bodies a a, each of which is shown as provided with an attaching means I) for securing thereto steel blades 0 0. These steel blades 0 c are shown in the present instance as provided with apertures o to fit over the securing means I) on the shear-bodies and with bent or springy rear ends 0 and with apertures c for the free and loose passage of the pivot 0 which joins the shear-bodies together, the aperture 0 in the steel blade 0 being preferably elongated to permit a slight movement of the blade and to take advantage of all the elasticity of the steel blade. It is unnecessary to elongate the aperture in the blade 0, as the latter need not be of such a springy character as blade Serial No. 673,309. (No model.)

0 and need not be compressed to the extent to which the springy portion of, the blade 0 is compressed. These steel blades are thus loosely secured to the shear-bodies, as each is free to move on its shear-body when the pivot c is removed. The shear-bodies a are preferably made by casting from any suitable metal, composition, or otherwise, and the blades 0 are thereupon secured to the same by passing securing means I) through the apertures c and upsetting the ends of the said securing means, which are herein shown as pins. The parts are thereupon put together in the ordinary manner and the pivot'c inserted through the shear-bodies and apertures c in the blades 0 c. This pivot 0 may be borne by one member of the shear-body or may be an entirely free and unconnected pivot, as shown in Fig. 6. It will be observed that the bent or springy portions of the blades present their greatest stress at or about the place where the pivot is located, so that by this means the shear-bodies are forced apart in the rear of the pivot and forced together in frontof the pivot, so as to bring about a very efficient cutting of the fabric. The shear-blade c is movable with respect to the shear-body a, but to a less degree than the shear-blade c is movable with respect to its shear-body a. It is of course obvious that the shear-blade 0 might be provided with an elongated aperture, but in the present instance the springiness of the shear-blade c supplies most of the springy action and is merely supplemented by the slight springiness of the blade 0.

What I claim isv 1. In shears or the like, the combination of a plurality of shear-bodies, a removable blade loosely secured to each shear-body and one at least movable with respect thereto when so secured.

2. In shears or the like, the combination of a plurality of shear-bodies, a removable blade secured to each shear-body at its front part and detached from the shear-body at its rear part and one at least movable with respect thereto when, so secured, and a pivot passing through the shear-bodies and loosely through the blades.

3. In shears or the like, the combination of a plurality of shear-bodies, a removable blade loosely secured to each shear-body and one the said blades being provided at their rear 10 at least movable With respect thereto when ends with bent or springy portions 0 whereby so secured and bent at their rear portions to 1 the shear-blades may be forced together to form spring portions capable of being com- 1nsure efficiency in cutting.

pressed by a pivot passing through the shear- FRANY KRUPP bodies.

4:. In combination, the shear bodies a, Witnesses:

blades loosely attached thereto and pivots se- R. E. JAHN,

curing the shear bodies and blades together, OTTO KGNIG. 

